首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食),including a variety of fruits and gree
The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食),including a variety of fruits and gree
admin
2012-09-11
82
问题
The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食),including a variety of fruits and green vegetables. It is only when people try to live on a very restricted diet that it is necessary to make special provision to supply the missing vitamins.
An example of the dangers of a restricted diet may be seen in the disease known as "beri-beri". It used to distress large numbers of Eastern peoples who lived mainly on rice. In the early years of this century, a scientist named Eijkman was trying to discover the cause of "beri-beri". At first he thought it was caused by a germ. He was working in a Japanese hospital, where the patients were fed on polished rice which had the outer husk (外壳) removed from the grain. It was thought this would be easier for weak and sick people to digest.
Eijkman thought his germ theory was confirmed when he noticed the chickens in the hospital yard, which were fed on leftovers (剩饭) from the patients’ plates, were also showing signs of the disease. He then tried to isolate the germ, but his experiments were interrupted by a hospital official, who declared that the polished rice, even though left over by the patients, was too good for chickens. It should be recooked for the patients, and the chickens should be fed on cheap rice with the outer layer still on the grain.
Eijkman noticed that the chickens began to recover on the new diet. He began to consider the possibility that eating unpolished rice somehow prevented or cured "beriberi"—even that a lack of some element in the husk might be the cause of the disease. Indeed this was the case. The element needed to prevent "beri-beri" was shortly afterwards isolated from rice husks and is now known as vitamin B. Nowadays, this terrible disease is much less common thanks to our knowledge of vitamins.
The chickens Eijkman noticed in the hospital yard______.
选项
A、couldn’t digest the polished rice
B、proved "beri-beri" is caused by germs
C、were later cooked for the patients’ food
D、were suffering from "beri-beri"
答案
D
解析
本题考查考生对文章细节的理解。A项未提到。B项是对文章第三段第一句话的曲解,这句话说,艾克曼开始的时候认为鸡吃了精米后生病是因为细菌的传染,但是后来第四段说,当鸡吃了糙米以后逐渐变得健康,这使得艾克曼放弃了自己之前的理论,开始觉得这种疾病是由于精米中缺乏某种物质造成的。C项未提及。因此选D。
转载请注明原文地址:https://kaotiyun.com/show/jsDO777K
0
成人本科学位英语
相关试题推荐
Industrialsafetydoesnotjusthappen.Companies【C1】______lowaccidentratesplantheirsafetyprograms,workhardtoorganize
UntilrecentlymosthistoriansspokeverycriticallyoftheIndustrialRevolution.They【C1】______thatinthelongrunindustria
UntilrecentlymosthistoriansspokeverycriticallyoftheIndustrialRevolution.They【C1】______thatinthelongrunindustria
Humansreadilychangetoolstosuitthecircumstances:onceabasicknowledgeoftool-makinghasbeenacquired,itisasimplem
Wetwohavesomuchincommonthatweshould______verywell.
Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforthenormalgrowthandmaintenanceoflifeofanimals,
Thechiefengineerstated______hebelieveditwasnecessarytostudytheproposalsforseveralmoremonthsbeforemakingadeci
Youshouldn’tchangejobsconstantly,orpeoplewillbecomesuspiciousofyourabilityto______anyjob.
Stressfulenvironmentsleadtounhealthybehaviorssuchaspooreatinghabits,which______increasetheriskofheartdisease.
Though______inNewYork,Davehadalwayspreferredtoliveinasmalltown.
随机试题
下列有关微型消防站灭火器材的配置,错误的是()。
《中华人民共和国合同法》中有关解决合同争议方式的正确表述有( )。
某建设项目设备及工器具购置费为600万元,建筑安装工程费为1200万元,工程建设其他费为100万元,建设期贷款利息为20万元,基本预备费率为10%,则该项目基本预备费为()万元。
行政处罚制裁的行为是国家工作人员与其职务有关的违法、渎职或失职行为。()
某企业大批量生产某种单一产品,该企业为了编制下年度的年度、季度计划,正进行生产能力核算工作。该企业全年制度工作日为250天,两班制,每班有效工作时间为7.5小时。已知:某车工车间共有车床20台,该车间单件产品时间定额为1小时;某钳工车间生产面积为145平方
对于未遂犯,可以比照既遂犯从轻或者减轻处罚。()
情报是指运用一定的媒体(载体),越过空间和时间传递给特定用户,以解决科研、生产、经营中的具体问题所需要的特定知识和信息。根据以上定义,以下不属于情报的是:
设3阶方阵A,B满足关系式A一1BA=6A+BA,且则B=________.
Startingaconversationisaseasyforsomepeopleaseatingandbreathing.However,ifyousufferfromsocialanxietydisorder
Therearesomeproblemsforinternationalstudentsand【B1】______studyingintheUnitedStates.Makingfriendsisa【B2】______.
最新回复
(
0
)